This property controls the minimum extent of the target control when dragging the splitter. The splitter will not allow dragging such that the target control is reduced beyond the greater of this extent and the MinimumSize on the control.
The extent here refers to the width of the target control when the splitter is docked left or right and the height of the target control when the splitter is docked top or bottom.
If the Collapse button is clicked and the control cannot be reduced to an extent of 0, the target control will be hidden using it's Visible property.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2